Rear diff.

[Showgoer]

Will a rear diff from a Cherokee bolt right in to a Comanche ? My diff went and looking for quick fix to be back on road in couple hours

 

 

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[Strokermjcomanche]

The perches are different widths and the Cherokee axle Is soa 

[Showgoer]

The perches are different widths and the Cherokee axle Is soa 

What diff would go in to it


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[Strokermjcomanche]

A Comanche axle 

[ghetdjc320]

I think a YJ axle *may* also bolt right in. 

[89 MJ]

1 hour ago, ghetdjc320 said:

I think a YJ axle *may* also bolt right in. 

I’ve heard that they are narrower. 

[derf]

32 minutes ago, 89 MJ said:

I’ve heard that they are narrower. 

The YJ perches are an inch to inch and a half narrower.

[omega_rugal]

2 hours ago, Showgoer said:

Will a rear diff from a Cherokee bolt right in to a Comanche ?

 

it may if you force but it will end up in a mess, you better off get a comanche axle or modify the cherokee one, if you have a d35 is the perfect chance to upgrade...

[ghetdjc320]

57 minutes ago, 89 MJ said:

I’ve heard that they are narrower. 

I know they are 40.5 center to center on the leaf pads. I remember a topic about swapping an mj 44 into a YJ. It’s been several years back but iirc it was a bolt in. 

[Pete M]

getting new perches welded on to an XJ axle is an easy task.    

[MiNi Beast]

are you talking axle swap so don't have to replace gear gear? you can replace the internal gears with any d35 from xj. will have to double check backlash but slap it together and run it. you can replace just the spider gears as well if thats the issue with out replacing the whole axle or carrier. but if want a bolt in axle consider the corp 14 bolt, as it bolts right in as a soa conversion. but that's 8 lug 1 ton stuff. but bolt in upgrade for about $150. 

[Showgoer]

Ok gents Iv changed the whole rear . Now Iv got a bad vibration. Changed u joints as well. I’m thinking piñon angle is off. How do I correct the piñon angle . ?


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[Big_Mark]

Has your driveline angle or length changed? 

Is the pinion in the new axle loose?

Those are the likely suspects for vibrations

[Pete M]

5 hours ago, Showgoer said:

Ok gents Iv changed the whole rear . Now Iv got a bad vibration. Changed u joints as well. I’m thinking piñon angle is off. How do I correct the piñon angle . ?


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what axle did you end up using?

[Showgoer]

 
what axle did you end up using?

I found another d35 out of an 87 Comanche that had2.5 in it was shape but some usable stuff picked for couple hundred bucks


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[Showgoer]

Has your driveline angle or length changed? 
Is the pinion in the new axle loose?
Those are the likely suspects for vibrations

Well I put new leafs in and it raised it a little. Is there any way to correct the angle?


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[Pete M]

photos of what all you've done?  including a photo of the driveshaft angles?

[MiNi Beast]

may need shims under the leafs to correct angle. angle finder is your friend here. and with the new leafs, are they in properly. front to back that is? 

[omega_rugal]

does that vibration is there all the time and becomes worse as you accelerate? if yes then is the angle...

[BeatCJ]

Swapping a Comanche axles into a Comanche should give you about the right pinion angle. I would look elsewhere. Something you changed?